# coding=utf-8
# Copyright 2024 The Google Research Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#     http://www.apache.org/licenses/LICENSE-2.0
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"""Type annotations."""

from typing import Any, Callable

import chex
import jax.numpy as jnp


# Typing a PyTree is non-trivial, so we do not attempt it for now.
PyTreeLike = Any

# Represents a dict[str, array]
Dataset = dict[str, chex.Array]

ActivationFunction = Callable[[chex.Array], chex.Array]

LossFunction = Callable[[chex.Array, chex.Array], jnp.float_]
